Patents by Inventor Frank J. Werderitch

Frank J. Werderitch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for sorting defective parts
    Patent number: 4387064
    Abstract: Peak pressure in a mold is sensed and if it is outside a predetermined range the part or parts being molded are separated from parts produced while the peak pressure is within the predetermined range.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: June 7, 1983
    Inventors: Frank J. Werderitch, Frank A. Eltvedt
  • Start-stop circuit for split phase motor
    Patent number: 4145646
    Abstract: A solid state bilateral switching device such as a Quadrac is serially connected with the start winding of a split phase motor and is triggered through a switch which is actuated when the motor approaches normal operating speed.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: March 20, 1979
    Inventor: Frank J. Werderitch